How many pieces does the LEGO Dark Side Developer Kit (9754-1) have?

The LEGO Dark Side Developer Kit set (9754-1) contains 578 pieces. It was released in 2000 as part of the LEGO Mindstorms theme.

How can I find missing parts for LEGO set 9754-1?

On BrickMissing you can check which parts from the LEGO Dark Side Developer Kit (9754-1) you already own. Add your LEGO collection and we'll show exactly which of the 578 pieces you're missing and which you already have.

Can I build the LEGO Dark Side Developer Kit with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 578 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Dark Side Developer Kit from?

The LEGO Dark Side Developer Kit (9754-1) belongs to the LEGO Mindstorms theme. You can browse all Mindstorms sets on BrickMissing to find more sets from this theme.

Dark Side Developer Kit

🏷️ 9754-1•🎨 Mindstorms•📅 2000•🧱 578 parts•Intermediate

Dark Side Developer Kit (9754-1) is a LEGO Mindstorms from 2000. This page uses the available set and theme data until a fuller product description is available.

Parts Inventory

🧱 578 parts

Part	Color	Qty
Rubber Band 15mm [Square Cross Section] 23229	Black	2×
Wedge Plate 3 x 6 Cut Corners 2419	Light Gray	2×
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] 2654	Black	16×
Technic Brick 1 x 10 [9 Pin Holes] 2730	Light Gray	4×
Technic Pin with Friction Ridges Lengthwise and Center Slots 2780	Black	44×
Technic Beam 1 x 4 Thin with Stud Connector 2825	Black	2×
Technic Engine Crankshaft Center 2854	Dark Gray	1×
Wheel Rim 24 x 14 VR with Center Axle Hole 2994	Black	4×
Plate 1 x 2 3023	Light Gray	16×
Plate 1 x 2 3023	Dark Gray	2×

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Technic Beam 1 x 4 Thin with Stud Connector	2825	Black	2×
Technic Engine Crankshaft Center	2854	Dark Gray	1×
Wheel Rim 24 x 14 VR with Center Axle Hole	2994	Black	4×
Plate 1 x 2	3023	Light Gray	16×
Plate 1 x 2	3023	Dark Gray	2×
Plate 2 x 8	3034	Dark Gray	4×
Bar 4L (Lightsaber Blade / Wand)	30374	Trans-Red	4×
Bar 4L (Lightsaber Blade / Wand)	30374	Trans-Light Blue	2×
Bar 4L (Lightsaber Blade / Wand)	30374	Trans-Neon Green	2×
Slope 45° 2 x 1 with Bottom Pin	3040b	Light Gray	2×
Technic Pin 3/4	32002	Dark Gray	8×
Technic Beam 1 x 11.5 Double Bent Thick	32009	Dark Gray	4×
Technic Axle and Pin Connector Angled #1	32013	Black	4×
Technic Axle and Pin Connector Angled #1	32013	Dark Gray	4×
Technic Axle and Pin Connector Angled #1	32013	Light Gray	4×
Technic Axle and Pin Connector Angled #5 - 112.5°	32015	Black	4×
Technic Axle and Pin Connector Angled #3 - 157.5?	32016	Black	4×
Technic Beam 1 x 5 Thin	32017	Light Gray	4×
Technic Axle and Pin Connector Angled #2 - 180°	32034	Black	2×
Technic Axle Connector with Axle Hole	32039	Black	6×
Technic Axle Connector with Axle Hole	32039	Light Gray	2×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	32054	Dark Gray	4×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	32054	Red	5×
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]	32054	Black	8×
Technic Axle 2 Notched	32062	Black	16×
Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin	32064a	Black	2×
Technic Steering Arm with 2 Pins	32069	Black	1×
Technic Axle 5	32073	Black	2×
Technic Bush 1/2 Smooth with Axle Hole Reduced	32123a	Tan	11×
Technic Beam 2 x 4 L-Shape Thick	32140	Black	8×
Technic Beam 1 x 7 with Fan	32177	Dark Gray	2×
Technic Panel Fairing # 3 Large Long, Large Holes, Side A	32188	Light Gray	2×
Technic Panel Fairing # 4 Large Long, Large Holes, Side B	32189	Light Gray	2×
Technic Panel Fairing # 1 Large Short, Large Holes, Side A	32190	Light Gray	2×
Technic Panel Fairing # 2 Large Short, Large Holes, Side B	32191	Light Gray	2×
Technic Axle and Pin Connector Angled #4 - 135°	32192	Dark Gray	4×
Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin	32250	Black	8×
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening]	32269	Light Gray	2×
Technic Gear 12 Tooth Double Bevel	32270	Light Gray	2×
Technic Beam 1 x 9 Bent (7 - 3) Thick	32271	Black	2×
Technic Beam 1 x 15 Thick	32278	Black	2×
Technic Beam 1 x 15 Thick	32278	Dark Gray	8×
Technic Axle and Pin Connector Perpendicular Double	32291	Black	2×
Technic Beam 3 x 7 x 2 Fork 3 Fingers	32308	Black	1×
Technic Block 3 x 5 x 1 2/3	32310	Dark Gray	1×
Technic Arm 1 x 7 x 3 with Gear Ends	32311	Dark Gray	2×
Technic Beam 1 x 5 Thick	32316	Dark Gray	6×
Technic Brick 4 x 4 with 2 x 2 Opening	32324	Light Gray	4×
Technic Pin Connector Block 1 x 5 x 3	32333	Black	8×
Hub, Micro Scout with Red Buttons and Dark Gray Base	32344c03	Light Gray	1×
Slope 33° 3 x 2	3298	Light Gray	17×
Technic Gear 8 Tooth	3647	Light Gray	1×
Technic Gear 24 Tooth [New Style with Single Axle Hole]	3648b	Light Gray	1×
Technic Gear 24 Tooth Crown with Reinforcements [New Style]	3650c	Light Gray	1×
Plate 1 x 6	3666	Black	1×
Plate 1 x 6	3666	Light Gray	1×
Technic Pin without Friction Ridges Lengthwise	3673	Light Gray	12×
Technic Brick 1 x 4 [3 Pin Holes]	3701	Light Gray	8×
Technic Brick 1 x 4 [3 Pin Holes]	3701	Dark Gray	6×
Technic Brick 1 x 8 [7 Pin Holes]	3702	Dark Gray	4×
Technic Axle 4	3705	Black	9×
Technic Axle 6	3706	Black	3×
Technic Axle 8	3707	Black	7×
Technic Axle 12	3708	Black	2×
Technic Plate 2 x 4 [3 Holes]	3709	Light Gray	1×
Plate 1 x 4	3710	Light Gray	1×
Technic Bush	3713	Light Gray	8×
Technic Axle 10	3737	Black	2×
Technic Axle Pin without Friction Ridges Lengthwise	3749	Light Gray	34×
Plate 2 x 6	3795	Black	2×
Plate 2 x 10	3832	Light Gray	8×
Technic Brick 1 x 6 [5 Pin Holes]	3894	Dark Gray	4×
Technic Brick 1 x 6 [5 Pin Holes]	3894	Light Gray	4×
Technic Brick 1 x 12 [11 Pin Holes]	3895	Dark Gray	4×
Dish 4 x 4 Inverted [Radar]	3960	Black	1×
Technic Gear 16 Tooth with Round Holes [Old Style]	4019	Red	2×
Technic Gear 16 Tooth with Round Holes [Old Style]	4019	Light Gray	2×
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)	4032a	Light Gray	8×
Technic Pin 1/2	4274	Light Gray	4×
Slope 33° 3 x 1	4286	Light Gray	2×
Technic Axle 3	4519	Black	11×
Cone 1 x 1 [No Top Groove]	4589	Trans-Red	3×
Arm Piece with Pin, 2 Fingers	6048a	Black	2×
Plate Round 1 x 1 with Solid Stud	6141	Light Gray	32×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Neon Orange	2×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Dark Blue	2×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Red	2×
Plate Round 1 x 1 with Solid Stud	6141	Trans-Yellow	2×
Arm Piece with Pin, 3 Fingers	6217	Black	2×
Technic Axle and Pin Connector Perpendicular	6536	Black	6×
Technic Axle Connector Ridged [with x Hole x Orientation]	6538b	Dark Gray	8×
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots	6558	Black	24×
Tyre 30.4 x 14 VR	6578	Black	4×
Gearbox 4 x 4 x 1 2/3 with 1 x 2 Cutouts, Pin Holes	6585	Black	1×
Technic Axle 3 with Stud	6587	Dark Gray	3×
Technic Gear 12 Tooth Bevel	6589	Red	7×
Technic Beam 1 x 9 Bent (6 - 4) Thick	6629	Dark Gray	2×
Technic Beam 1 x 3 Thin	6632	Black	14×
Technic Pin Connector Round [No Slot]	75535	Black	7×
Hose Rigid 3mm D. 3L / 2.4cm	75c03	Dark Gray	1×
Hose Rigid 3mm D. 8L / 6.4cm	75c08	Dark Gray	4×
Hose Rigid 3mm D. 16L / 12.8cm	75c16	Dark Gray	2×
Hose, Ribbed 7mm D. 7L / 5.6cm	78c07	Pearl Light Gray	4×

Build DNA

Parts inventory insights for Dark Side Developer Kit

578 pieces puts this build +24% against the average Mindstorms set and +240% against the average 2000 release.

LEGOMINDSTORMS

Vs average Mindstorms set

+24%+112 parts

This set578

Average set466

Average Mindstorms set: 466 pieces across 33 other sets.

Vs average 2000 set

+240%+408 parts

This set578

Average set170

Average 2000 set: 170 pieces across 149 other sets.

Color profile

11different colors

Dominant color

Black

Black246x

43%

Light Gray196x

34%

Dark Gray88x

15%

Red14x

Unique parts

6.4 pieces per unique type

Repeat factor

Average pieces per unique type.

Most used part

Technic Pin with Friction Ridges Lengthwise and Center Slots

44x

Results are based on official LEGO part inventories. Accuracy improves as you confirm set completeness.

This site is not affiliated with or endorsed by the LEGO Group.

Build Insights🧩91unique parts🎨11different colors📊52.5avg. parts per color🏆44×Technic Pin with Friction Ridges Lengthwise and Center Slots

🎨 All Mindstorms sets 📅 All sets from 2000

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